/Engine/Source/Editor/SequencerCore/Public/MVVM/Views/SOutlinerView.h
Add aSOutlinerViewobject that should be modified or updated when this Treeview is updated
void AddPinnedTreeView ( [TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [SOutlinerView](API\Editor\SequencerCore\MVVM\Views\SOutlinerView) > PinnedTreeView )